US 12,287,152 B2
Heat pipe, heat exchange device, and method for manufacturing heat pipe
Tsuneo Endo, Saitama (JP); and Yuta Kurosawa, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Mar. 30, 2023, as Appl. No. 18/128,735.
Claims priority of application No. 2022-061346 (JP), filed on Mar. 31, 2022; and application No. 2022-173686 (JP), filed on Oct. 28, 2022.
Prior Publication US 2023/0314089 A1, Oct. 5, 2023
Int. Cl. F28D 15/04 (2006.01); B23P 15/26 (2006.01)
CPC F28D 15/046 (2013.01) [B23P 15/26 (2013.01); B23P 2700/09 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A heat pipe comprising:
a heat receiving chamber;
a heat dissipation chamber;
a tubular connecting pipe communicating between the heat receiving chamber and the heat dissipation chamber; and
a plurality of wicks extending inside the heat receiving chamber, the heat dissipation chamber, and the connecting pipe, wherein:
a refrigerant flows inside the heat receiving chamber, the heat dissipation chamber, and the connecting pipe;
the heat receiving chamber has, when viewed from a first direction perpendicular to a longitudinal direction of the connecting pipe, a greater width in a second direction perpendicular to both the longitudinal direction and the first direction of the connecting pipe than a width of the connecting pipe in the second direction;
the heat dissipation chamber has, when viewed from the first direction, a greater width in the second direction than the width of the connecting pipe in the second direction;
the plurality of wicks are formed side by side at least in the second direction;
the wicks are formed in a groove shape on inner wall surfaces of the heat receiving chamber, the heat dissipation chamber, and the connecting pipe;
at least one of the wicks has a bent portion on the heat receiving chamber side, which is bent in the second direction in the heat receiving chamber when viewed from the first direction;
at least one of the wicks has a bent portion on the heat dissipation chamber side, which is bent in the second direction in the heat dissipation chamber when viewed from the first direction;
the wicks adjacent to each other in the second direction have an interval in the heat receiving chamber and an interval in the heat dissipation chamber which are wider than an interval in the connecting pipe; and
the heat receiving chamber, the heat dissipation chamber, the connecting pipe, and the wicks are integrally formed by laminating and shaping using a metal powder.